So far it seems that only Jim Carter's has anything in the steel wheel :

very close to the original 1/2 ton wheel - 6 bolt 15" x 5".

WHEELS: Smooth finish.1934-59 15” x 5” wide Ready for priming and paint

WHEELS:Smooth finish.1934-59 15” x 5” wide Ready for priming and paint

MST150 <- JC's part number


-W